Elastic Electron Collisions with Cyanoacetylene

A comprehensive theoretical
investigation involving electron collisions
with cyanoacetylene is reported. Differential cross sections (DCSs),
integral cross sections (ICSs), and momentum-transfer cross sections
(MTCSs) for the elastic electron scattering were calculated using
the Schwinger multichannel (SMC) method at the static-exchange plus
polarization (SEP) level of approximation for energies ranging from
0.5 to 30 eV. The Schwinger variational method combined with Padé’s
approximants (SVPA), considering static-exchange-polarization plus
absorption (SEPA), was also applied for impact energies from 0.1 to
1000 eV. These results were complemented by calculations performed
according to the screen-corrected independent atom model (SCIAM).
Furthermore, original measurements of absolute elastic (DCSs) at 20
eV were conducted in a crossed-beam apparatus. The theoretical results
display an outstanding agreement with each other and an overall agreement
with the calculated cross sections available in the literature. The
agreement between the calculated and measured results is quite encouraging,
further validating the thoroughness of the current research.